
#screen {
    width: 400px;
    height: 200px;
    font-size: 20px;
    background-color: rgba(255, 255, 255, 0.5);
    color: black;
    border-radius: 10px;

    text-align: center;
    line-height: 100px;
}

#match-button {
    width: 400px;
    height: 50px;
    font-size: 20px;
    color: white;
    background-color: orange;
    border: none;
    outline: none;
    border-radius: 10px;

    text-align: center;
    line-height: 50px;
    margin-top: 20px;
}

#match-button:active {
    background-color: gray;
}

/* AI对战按钮样式 */
.ai-buttons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
    justify-content: center;
}

.ai-button {
    width: 180px;
    height: 50px;
    font-size: 18px;
    color: white;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    outline: none;
    border-radius: 25px;
    text-align: center;
    line-height: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    font-weight: bold;
}

.ai-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

.ai-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}